Here's a theory about the growth of pubic hair.

One of the theories as to why pubic hair growth occurs during puberty is for other people to have a visual cue that you are now sexually ready. In addition, the bush also protects you from fiction during sex.

Another theory involves sweat.

And then there's the apocrine gland.

The other gland is the apocrine gland that is found in the armpit and the pubic areas. Through the pubic hair follicles, the gland secretes fluids that are rich in proteins, pheromones, and lipids. When the bacteria on the skin break these fluids down, you start to have body odor.

These are the negative effects of shaving.

A study that had 1000 student participants noted that almost all of males and females shaved their pubic hairs. Likewise, 75% of people who shaved or waxed their pubic hair off experienced itchiness while 40% had rashes.

Shaving can also lead to abrasions or worse, STDs.

There are direct correlations.

Finally, some people have theorized that shaving pubic hair has direct correlations with the rise of chlamydia, HPV infections, and gonorrhea. In the end, it is definitely okay to keep your bush the way nature intended.